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= - 6x² + 10x - 9x + 15
= - 2x(3x - 5) - 3(3x - 5)
= (3x - 5)(-2x - 3)
smgmbntu ya
=-6x²+10x-9x+15
=2x.-3x-2x.-5-3x.3+5.3
=-2x(3x+5)-3(3x+5)
=(-2x-3)(3x-5)
smoga membantu